Fin efficiency of heat exchanger, HEX uniform h non-uniform h NTU f 0.1 1.0 1.7 2.5 (a) Theoretical fin efficiency, th (b) Fin efficiency of heat exchanger, HEX Figure 4:Comparison of the fin efficiencies and the normalized fin temperature for the uniform and non-uniform heat transfer
May 01, 2013 · In a fin and tube heat exchanger with air on the fin side, the objective is to exchange heat, resulting in a temperature change of the air stream as it passes over the fin. The temperature of the ambient fluid (the air stream) is therefore not constant, in Thermal calculations of platefinand-tube heat exchangers Abstract In finned tube heat exchangers, the first rows of tubes are most effective when the air velocity in front of the exchanger is less than about 3.5 m/s. The heat transfer coefficient (HTC) decreases with each subsequent row and stabilizes only from the fifth row onwards.
Feb 20, 2021 · The fins on the outside of the heat pipe greatly increase the heat transfer area and greatly reduce the convective heat transfer resistance on both sides. It is very economical for the recovery of low-grade heat energy; In addition, the finned tube heat exchanger can easily realize the vertical sweeping flow outside the fluid tube and the pure countercurrent flow of the cold and hot fluids. Heat Exchanger Finned Tube - Fluid Dynamics
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